/**
 * Copyright (c) 2011-2015, SpaceToad and the BuildCraft Team
 * http://www.mod-buildcraft.com
 * <p/>
 * BuildCraft is distributed under the terms of the Minecraft Mod Public
 * License 1.0, or MMPL. Please check the contents of the license located in
 * http://www.mod-buildcraft.com/MMPL-1.0.txt
 */
package buildcraft.core.blueprints;

import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;

import buildcraft.api.blueprints.IBuilderContext;
import buildcraft.api.blueprints.SchematicMask;
import buildcraft.api.core.BuildCraftAPI;
import buildcraft.core.lib.utils.NBTUtils;

/**
 * Use the template system to describe fillers
 */
public class Template extends BlueprintBase {

	public Template() {
		id.extension = "tpl";
	}

	public Template(int sizeX, int sizeY, int sizeZ) {
		super(sizeX, sizeY, sizeZ);

		id.extension = "tpl";
	}

	@Override
	public void readFromWorld(IBuilderContext context, TileEntity anchorTile, int x, int y, int z) {
		int posX = (int) (x - context.surroundingBox().pMin().x);
		int posY = (int) (y - context.surroundingBox().pMin().y);
		int posZ = (int) (z - context.surroundingBox().pMin().z);

		if (!BuildCraftAPI.isSoftBlock(anchorTile.getWorldObj(), x, y, z)) {
			put(posX, posY, posZ, new SchematicMask(true));
		}
	}

	@Override
	public void saveContents(NBTTagCompound nbt) {
		// Note: this way of storing data is suboptimal, we really need a bit
		// per mask entry, not a byte. However, this is fine, as compression
		// will fix it.

		byte[] data = new byte[sizeX * sizeY * sizeZ];
		int ind = 0;

		for (int x = 0; x < sizeX; ++x) {
			for (int y = 0; y < sizeY; ++y) {
				for (int z = 0; z < sizeZ; ++z) {
					data[ind] = (byte) ((get(x, y, z) == null) ? 0 : 1);
					ind++;
				}
			}
		}

		nbt.setByteArray("mask", data);
	}

	@Override
	public void loadContents(NBTTagCompound nbt) throws BptError {
		byte[] data = nbt.getByteArray("mask");
		int ind = 0;

		for (int x = 0; x < sizeX; ++x) {
			for (int y = 0; y < sizeY; ++y) {
				for (int z = 0; z < sizeZ; ++z) {
					if (data[ind] == 1) {
						put(x, y, z, new SchematicMask(true));
					}

					ind++;
				}
			}
		}
	}

	@Override
	public ItemStack getStack() {
		Item item = (Item) Item.itemRegistry.getObject("BuildCraft|Builders:templateItem");
		ItemStack stack = new ItemStack(item, 1);
		NBTTagCompound nbt = NBTUtils.getItemData(stack);
		id.write(nbt);
		nbt.setString("author", author);
		nbt.setString("name", id.name);

		return stack;
	}

}